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cryb-to/include/cryb/endian.h

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/*-
* Copyright (c) 2014-2016 Dag-Erling Smørgrav
* Copyright (c) 2016 Universitetet i Oslo
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef CRYB_ENDIAN_H_INCLUDED
#define CRYB_ENDIAN_H_INCLUDED
#ifndef CRYB_TO
#include <cryb/to.h>
#endif
#if HAVE_SYS_ENDIAN_H
#include <sys/endian.h>
#endif
#if HAVE_ENDIAN_H
#include <endian.h>
#endif
CRYB_BEGIN
#if !HAVE_DECL_BSWAP16
#define bswap16 cryb_bswap16
#endif
#if !HAVE_DECL_BSWAP32
#define bswap32 cryb_bswap32
#endif
#if !HAVE_DECL_BSWAP64
#define bswap64 cryb_bswap64
#endif
#if !HAVE_DECL_BE16ENC
#define be16enc cryb_be16enc
#endif
#if !HAVE_DECL_BE16DEC
#define be16dec cryb_be16dec
#endif
#if !HAVE_DECL_BE32ENC
#define be32enc cryb_be32enc
#endif
#if !HAVE_DECL_BE32DEC
#define be32dec cryb_be32dec
#endif
#if !HAVE_DECL_BE64ENC
#define be64enc cryb_be64enc
#endif
#if !HAVE_DECL_BE64DEC
#define be64dec cryb_be64dec
#endif
#if !HAVE_DECL_LE16ENC
#define le16enc cryb_le16enc
#endif
#if !HAVE_DECL_LE16DEC
#define le16dec cryb_le16dec
#endif
#if !HAVE_DECL_LE32ENC
#define le32enc cryb_le32enc
#endif
#if !HAVE_DECL_LE32DEC
#define le32dec cryb_le32dec
#endif
#if !HAVE_DECL_LE64ENC
#define le64enc cryb_le64enc
#endif
#if !HAVE_DECL_LE64DEC
#define le64dec cryb_le64dec
#endif
#if !HAVE_DECL_HTOBE16
#define htobe16 cryb_htobe16
#endif
#if !HAVE_DECL_BE16TOH
#define be16toh cryb_be16toh
#endif
#if !HAVE_DECL_HTOLE16
#define htole16 cryb_htole16
#endif
#if !HAVE_DECL_LE16TOH
#define le16toh cryb_le16toh
#endif
#if !HAVE_DECL_HTOBE32
#define htobe32 cryb_htobe32
#endif
#if !HAVE_DECL_BE32TOH
#define be32toh cryb_be32toh
#endif
#if !HAVE_DECL_HTOLE32
#define htole32 cryb_htole32
#endif
#if !HAVE_DECL_LE32TOH
#define le32toh cryb_le32toh
#endif
#if !HAVE_DECL_HTOBE64
#define htobe64 cryb_htobe64
#endif
#if !HAVE_DECL_BE64TOH
#define be64toh cryb_be64toh
#endif
#if !HAVE_DECL_HTOLE64
#define htole64 cryb_htole64
#endif
#if !HAVE_DECL_LE64TOH
#define le64toh cryb_le64toh
#endif
static inline uint16_t
cryb_bswap16(uint16_t u16)
{
#if HAVE___BUILTIN_BSWAP16
return (__builtin_bswap16(u16));
#else
return (((u16 & 0x00ffU) >> 0) << 8 |
((u16 & 0xff00U) >> 8) << 0);
#endif
}
static inline uint32_t
cryb_bswap32(uint32_t u32)
{
#if HAVE___BUILTIN_BSWAP32
return (__builtin_bswap32(u32));
#else
return (((u32 & 0x000000ffLU) >> 0) << 24 |
((u32 & 0x0000ff00LU) >> 8) << 16 |
((u32 & 0x00ff0000LU) >> 16) << 8 |
((u32 & 0xff000000LU) >> 24) << 0);
#endif
}
static inline uint64_t
cryb_bswap64(uint64_t u64)
{
#if HAVE___BUILTIN_BSWAP64
return (__builtin_bswap64(u64));
#else
return (((u64 & 0x00000000000000ffLLU) >> 0) << 56 |
((u64 & 0x000000000000ff00LLU) >> 8) << 48 |
((u64 & 0x0000000000ff0000LLU) >> 16) << 40 |
((u64 & 0x00000000ff000000LLU) >> 24) << 32 |
((u64 & 0x000000ff00000000LLU) >> 32) << 24 |
((u64 & 0x0000ff0000000000LLU) >> 40) << 16 |
((u64 & 0x00ff000000000000LLU) >> 48) << 8 |
((u64 & 0xff00000000000000LLU) >> 56) << 0);
#endif
}
static inline void
cryb_be16enc(void *p, uint16_t u16)
{
((uint8_t *)p)[1] = u16 & 0xff;
((uint8_t *)p)[0] = (u16 >> 8) & 0xff;
}
static inline uint16_t
cryb_be16dec(const void *p)
{
return ((uint16_t)((const uint8_t *)p)[1] |
(uint16_t)((const uint8_t *)p)[0] << 8);
}
static inline void
cryb_be32enc(void *p, uint32_t u32)
{
((uint8_t *)p)[3] = u32 & 0xff;
((uint8_t *)p)[2] = (u32 >> 8) & 0xff;
((uint8_t *)p)[1] = (u32 >> 16) & 0xff;
((uint8_t *)p)[0] = (u32 >> 24) & 0xff;
}
static inline uint32_t
cryb_be32dec(const void *p)
{
return ((uint32_t)((const uint8_t *)p)[3] |
(uint32_t)((const uint8_t *)p)[2] << 8 |
(uint32_t)((const uint8_t *)p)[1] << 16 |
(uint32_t)((const uint8_t *)p)[0] << 24);
}
static inline void
cryb_be64enc(void *p, uint64_t u64)
{
((uint8_t *)p)[7] = u64 & 0xff;
((uint8_t *)p)[6] = (u64 >> 8) & 0xff;
((uint8_t *)p)[5] = (u64 >> 16) & 0xff;
((uint8_t *)p)[4] = (u64 >> 24) & 0xff;
((uint8_t *)p)[3] = (u64 >> 32) & 0xff;
((uint8_t *)p)[2] = (u64 >> 40) & 0xff;
((uint8_t *)p)[1] = (u64 >> 48) & 0xff;
((uint8_t *)p)[0] = (u64 >> 56) & 0xff;
}
static inline uint64_t
cryb_be64dec(const void *p)
{
return ((uint64_t)((const uint8_t *)p)[7] |
(uint64_t)((const uint8_t *)p)[6] << 8 |
(uint64_t)((const uint8_t *)p)[5] << 16 |
(uint64_t)((const uint8_t *)p)[4] << 24 |
(uint64_t)((const uint8_t *)p)[3] << 32 |
(uint64_t)((const uint8_t *)p)[2] << 40 |
(uint64_t)((const uint8_t *)p)[1] << 48 |
(uint64_t)((const uint8_t *)p)[0] << 56);
}
static inline void
cryb_le16enc(void *p, uint16_t u16)
{
((uint8_t *)p)[0] = u16 & 0xff;
((uint8_t *)p)[1] = (u16 >> 8) & 0xff;
}
static inline uint16_t
cryb_le16dec(const void *p)
{
return ((uint16_t)((const uint8_t *)p)[0] |
(uint16_t)((const uint8_t *)p)[1] << 8);
}
static inline void
cryb_le32enc(void *p, uint32_t u32)
{
((uint8_t *)p)[0] = u32 & 0xff;
((uint8_t *)p)[1] = (u32 >> 8) & 0xff;
((uint8_t *)p)[2] = (u32 >> 16) & 0xff;
((uint8_t *)p)[3] = (u32 >> 24) & 0xff;
}
static inline uint32_t
cryb_le32dec(const void *p)
{
return ((uint32_t)((const uint8_t *)p)[0] |
(uint32_t)((const uint8_t *)p)[1] << 8 |
(uint32_t)((const uint8_t *)p)[2] << 16 |
(uint32_t)((const uint8_t *)p)[3] << 24);
}
static inline void
cryb_le64enc(void *p, uint64_t u64)
{
((uint8_t *)p)[0] = u64 & 0xff;
((uint8_t *)p)[1] = (u64 >> 8) & 0xff;
((uint8_t *)p)[2] = (u64 >> 16) & 0xff;
((uint8_t *)p)[3] = (u64 >> 24) & 0xff;
((uint8_t *)p)[4] = (u64 >> 32) & 0xff;
((uint8_t *)p)[5] = (u64 >> 40) & 0xff;
((uint8_t *)p)[6] = (u64 >> 48) & 0xff;
((uint8_t *)p)[7] = (u64 >> 56) & 0xff;
}
static inline uint64_t
cryb_le64dec(const void *p)
{
return ((uint64_t)((const uint8_t *)p)[0] |
(uint64_t)((const uint8_t *)p)[1] << 8 |
(uint64_t)((const uint8_t *)p)[2] << 16 |
(uint64_t)((const uint8_t *)p)[3] << 24 |
(uint64_t)((const uint8_t *)p)[4] << 32 |
(uint64_t)((const uint8_t *)p)[5] << 40 |
(uint64_t)((const uint8_t *)p)[6] << 48 |
(uint64_t)((const uint8_t *)p)[7] << 56);
}
static inline uint16_t
cryb_htobe16(uint16_t u16)
{
#if !WORDS_BIGENDIAN
u16 = cryb_bswap16(u16);
#endif
return (u16);
}
static inline uint16_t
cryb_be16toh(uint16_t u16)
{
#if !WORDS_BIGENDIAN
u16 = cryb_bswap16(u16);
#endif
return (u16);
}
static inline uint16_t
cryb_htole16(uint16_t u16)
{
#if WORDS_BIGENDIAN
u16 = cryb_bswap16(u16);
#endif
return (u16);
}
static inline uint16_t
cryb_le16toh(uint16_t u16)
{
#if WORDS_BIGENDIAN
u16 = cryb_bswap16(u16);
#endif
return (u16);
}
static inline uint32_t
cryb_htobe32(uint32_t u32)
{
#if !WORDS_BIGENDIAN
u32 = cryb_bswap32(u32);
#endif
return (u32);
}
static inline uint32_t
cryb_be32toh(uint32_t u32)
{
#if !WORDS_BIGENDIAN
u32 = cryb_bswap32(u32);
#endif
return (u32);
}
static inline uint32_t
cryb_htole32(uint32_t u32)
{
#if WORDS_BIGENDIAN
u32 = cryb_bswap32(u32);
#endif
return (u32);
}
static inline uint32_t
cryb_le32toh(uint32_t u32)
{
#if WORDS_BIGENDIAN
u32 = cryb_bswap32(u32);
#endif
return (u32);
}
static inline uint64_t
cryb_htobe64(uint64_t u64)
{
#if !WORDS_BIGENDIAN
u64 = cryb_bswap64(u64);
#endif
return (u64);
}
static inline uint64_t
cryb_be64toh(uint64_t u64)
{
#if !WORDS_BIGENDIAN
u64 = cryb_bswap64(u64);
#endif
return (u64);
}
static inline uint64_t
cryb_htole64(uint64_t u64)
{
#if WORDS_BIGENDIAN
u64 = cryb_bswap64(u64);
#endif
return (u64);
}
static inline uint64_t
cryb_le64toh(uint64_t u64)
{
#if WORDS_BIGENDIAN
u64 = cryb_bswap64(u64);
#endif
return (u64);
}
CRYB_END
#endif
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